Refining-engine.



No. 698,084. Patented Apr. 22, I902.

s. n. .WA'GG. I nEFmms ENGINE.

(Appligation filed May 3, 190'1.)

(No Model.)

. a g I,

THE NORRIS PETERS 60., PHDTO-LITHO., WASNINGTON, Dv I?v UNITED STATESATENT OFFICE.

SOLOMON R. WVAGG, OF APPLETON, WISCONSIN.

REFlNlNG-ENGINE.

SPECIFICATION forming part of Letters Patent N 0. 698,084, dated April22, 1902. Application filed May 3, 19011 Serial No. 58,655. (No model.)7

.following is a specification.

My invention relates to certain new and usefulimprovements inrefining-engines, and specifically to a novel construction ofbar orblade and to an improved manner of securing the bars about the roll orplug of the engine.

In order that my invention may be clearly understood, I have illustratedthe same in the accompanying drawings, in which' Figure 1 is across-section through the roll or plug of an engine, showing the barsarranged about the periphery thereof in the manner contemplated by myinvention. Fig. 2 is a longitudinal section through such plug or roll.Fig. 3 is a cross-section through a bar constructed according to myinvention, said bar presenting two blades or cutting edges.

Fig. 4 is a similar view of a bar presenting three blades or cuttingedges. Fig. 5 shows in cross-section a modified construction of the barshowninFig. 3. Fig. 6 shows a further modification in the constructionof this bar, and Fig. 7 shows in cross-section amodified construction ofthe bar shown in Fig.4. J

Referring to the drawingaoindicates the roll or plug of arefining-engine, which roll may be of a cylindrical form for use in aH01- land engine or of a conical form for use in an engine of the Jordantype. Forthe sake of brevity this part will be referred to hereinafteras a roll. Located at intervals throughout the length of this roll andextending around itsperiphery are a series 'of"'an-' nular ribs orprojections 6, formed integral with the roll. Five of these annular ribsare shown in the drawings; buta greater or less number may be employed,so that'one rib be located at each end of the roll. Eachof these ribsis, provided in its outer edge'fatintervals throughout its length withaseries of recesses 7 of less depth than the total distance the ribsproject'beyond the surface of the roll and of a width to snugly receivethe bars 8, which are adapted to be set in these recesses and projectradially outward from the roll. The

' bars 8 extend from end to end of the roll, and

it will be understood that the construction afiords a circular series ofalining recesses extending longitudinally of the roll to receive thebars 8. Said bars are held in place on the roll in the usual or anypreferred mannersay by means of hoops 9, inserted in recesses in thebars at each end of the roll. By setting the bars in the mannerdescribed a space 10 will be left between the bottom of each bar andthesurface of the roll, and this space is to permit the wood filling 11,which is wedged in between the bars, as usual, to expand beneath thebottom edge of each adjacent bar, and thus be held securely in place, asclearly shown in Fig. 1.

In my prior patent,No. 625,818, granted May 30, 1899, I have describedand claimeda bar .for'refining-engines havinga groove in its"cutting-surface. This groovein practice is aboutthree-sixteenths of aninch in thickness and one andone-eighth inches deep, and I have foundgreat difficulty in having such a groove formed in the bar, andthe'production of such a bar is relatively very expensive. To avoidthedifficulty and expense ofthis prior construction, I have conceivedtheconstruc- .tion herein described and illustrated, which,

however, it will, be seencomes within the broad spirit of the inventionof my said patent. In the present case the bars are constructed asfollows: Referring toEig.,3, each of the bars 8 consists of twoparallelmem-. bore .12 13,-welded together or secured to gether by meansof rivets 14,01 both ways of securing these members together may beemployed. The member- 12 is twice as thick as the member 13, and beforebeing secured ,theretoand in the process of manufacture is provided inthe rolling-mill with an L-shaped recess 15, which extends to a depth ofone and one-eighth inches from the'outer edge of the bar and; in Widthis. one-half the thickness of the member12 or of the same thick-.

ness as the member 13. When the'members 12 and 13 are brought together,therefore,

will be seen that two blades 16 of equal width will be provided, havinga space 17 between with the recess 15 facing the memberl'o, it y them,in which space may be'applied the filling-strips described in my saidpatent. By. preference, however, I employ lead strips 18 the bar shownin my said patent only in the fact that it ismade in two parts. In usethe action of each is precisely the same.

In case it is desired that each bar 8 should have three blades orcutting-surfaces 16 I have devised the construction shown in Fig. 4. Inthis instance the member 12 is slightly thickened and in the process ofrolling is provided with an L-shaped recess 15 on each side, as shown. Amember 13 is then secured to each side of the member 12, each of whichprovides a cutting surface or blade 16. The third blade 16 is providedby the central portion of the member 12, as shown.

In the modified construction shown in Fig. 5 I employ two bars ormembers 20, each of which is provided on its inner side with an L-shapedrecess 21, corresponding to the recess 15 of the construction shown inFig. 3, but only one-half the width of such recess, so that when the twomembers 20 are secured together with the recesses 21 facing each other acentral recess 22 will be provided of the same width as the recess 17 ofthe prior constructions.

In Fig. 6 is shown a modified construction of the bar shown in Fig. 5.In this construction an integral bar 23 (shown by dotted lines) isprovided at opposite ends while being rolled with the recesses 21, andthen the bar is bent upon itselt to the position shown in full lines andsecured together by a rivet 1-;t or by being welded, or both.

In Fig. '7 I have shown a modification in the construction of barrepresented in Fig. I, wherein three cutting-blades are provided. Inthis construction I roll two bars or members 24, each of which issimilar to the member 12 of Fig. 3, and secure them, with their recesses25 facing each other, to opposite sides of a straight bar 26, so thattwo grooves 27 and three cutting-blades 28 will be provided.

In order to further insure the secure fastening of the wood filling 11between the bars 8, I groove, eorrugate, or otherwise roughen each sideof said bars, as indicated at 19, so that when the wood filling expandsit will take into said grooves or roughened surface, and thereby be heldsecurely in place.

I claim- 1. In a refining-engine, aroll provided with a series ofannular ribs having continuous alining recesses, of less depth than saidribs, a series of blades set in said recesses, each of said bladeshaving its outer sides grooved or roughened, and a wood filling betweeneach pair of adjacent blades.

2. A bar for refining-engines, composed of two blades securely united toeach other, one of said blades having a recess provided in its opposingside whereby to afford a fillinggroove between the blades.

3. A bar for refining-engines composed of two members securely united,one of said members being thicker than the other and having a recessprovided in its opposing side.

4. A bar for refining-engines, composed of two blades securely united toeach other to form a compound bar and separated througln out theirlength and for a portion of their width by a groove having parallel sidewalls.

5. A bar for refining-engines, composed of a number of members securelyunited to each other to form a compound bar, one or more of said membershaving a portion of its body removed whereby to provide cutting surfacesor blades and a filling-groove having parallel side walls betweenadjacent members.

6. A bar for refining-engines, composed of a number of members, one ormore of said members being recessed, whereby when the members are placedside by side to provide cutting surfaces or blades and a filling-groovebetween the blades.

7. A bar for refining-engines, composed of a number of members securelyunited to each other to form a compound bar and separated throughouttheir length and for a portion of their width bya rectangular recessformed in one or more of said members.

8. A bar for refining-engines having its outer sides grooved orroughened, as and for the purpose described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing Witnesses.

SOLOMON It. IVAGG.

Witnesses:

WM. A. RICHARD, Gno. II. PIESENBOOM.

